Centrifugal drier



T. M N ELLY- fiENTRIFUGAL DRIER March .10, 1925.

FiledAug. 23. 1922 I I Imeni'or:

Wrarws M A 44),

Wine-958.9.

Patented Mar. 10, E925.

UNITED STATES nane j PATENT "ounce.

THOMAS Moriart or onarnron, IENNSYLVANIA.

CENTRIFUGA L DRIER.

Application filed August 23, 1922. Serial No. 583,870.

more particularly to bell holders for locking the vertically movable'bell of centrifugal driers in raised position, and has for one of its objects the provision of holders of this type that will be automatically operated by the bell itself. i

Another object is to provide a device of this type that will have the novel features, construction and combination of parts hereinafter described and illustrated in the accompanying drawings, in which Figure 1 is a side elevation, partly in section, showing the invention applied to the vertically movable basket bell of a centrifugal drier.

angles to the elevation of Figure 1.

Figure 8 is an enlarged plan of one of the looking or holding dogs.

Referring more particularly to the draw ings, the numeral 2 designates the vertically movable basket bell of a centrifugal drier, which has a tubular standard portion 3 adapted to fit around the shaft 4:. The portion 3 terminates at its upper end in an outwardly flaring flange 5.

A plurality of locking or holding dogs 6 are pivotally mounted on pins 7 secured in brackets 8. The brackets 8 are secured to suitable supports 9 and are spaced around the shaft 4 so that the dogs 6 are arranged radially from the shaft 4L and extend into the path of travel of the flange 5 on the portion 3 of the bell 2.

The dogs are each provided with upper and lower jaw portions 10 and 11, respectively, adapted to engage around the flange 5 of the bell.

A coil spring 12 is mounted on each of the pins 7 and has one end secured in a hole 13 in the dogs 6 and its other end secured in a selected one of the plurality of holes 14 in the head of the ins 7 The springs are adjusted before being secured in the holes 14 to normally hold the dogs 6 in the dotted line position A.

The dogs ar normal y Pressed do n Wardly to the dotted line position designated by the letter A (see Figure l) and in this positionthey lie in the path of travel ofthe flange 5. The 'dogs are adapted to be engaged by the flange 5 as the bell is raised and rocked about the pins 7 until they reach a position slightly above the full line position of Figure 15 when the flange 5 will ride over the bottom jaws 11 of the dogs. At this time the bell will be slightly' lowered and becomes wedged against the closed side of the jaws of the dogs, and is thus locked in position. I f WVhen it is desired to raised vertically until the flange reaches the position B, shown in dotted lines in Figure lower the bell 2 it is 1, at which time the upper jaws 10 of the dogs will clear the flange and will automatically return to the position A, due to the tension of the springs 12. The basketwill now be lowered and during its downward travel it will engage the upper jaw 10 of the dogs and force said dogs to'rotate on the pins 7 until they reach the, position C shown in. Figure 2 1s a s1de elevatlon taken at right" Figure 1, at which time the flange 5 will ride beyond the dogs, thus-releasing the dogs so that they will return to their original or normal position A. The above cycle of operations may then be repeated as desired.

While I have shown and described one 1 specific embodiment of my invention it will be understood that I do not wish to be limitin the appended able bell of a centrifugal drier, of a plurality of pivoted locking dogs adapted to engage said bell and lock it in raised position, said-dogs being operable-by said bell. and said dogs being adapted to automatically release said bell when said bell is moved a predetermined distance above said dogs.

3. The combination with avertically movable basket bell of a centrifugal, drier having an outwardly flaring flange at its top, of a p r lity ct locking (l ge pivotally t distance.

mounted at spaced intervals adjacent said bell and extending into thepath of travel'of said flange, means tending to normally force said dogs downwardly, said dogs being adapted to be engaged by said "flange and rotated around their pivotal mountings when said bell is raised, and jaws on said dogs adapted to engage said flange to prevent downward movement of said bell when said. bellhas been raised a predetermined '4... The combination with a vertically movable basket bell of a centrifugal drier having-an outwardlyflaring flange at'its top;

'of a plurality of locking dogs pivotally mounted at spaced intervals adjacent said bell and ex-tending intothe path of'travel I of a said flange,:n1eans? tending to, normally-force said clogs downwardly,- "said "dogs being adapted to be wen'gage'd said flange :and 'ro'tat'ed arou-nd their pivotal mounting "when said bell israised, jaws on said dogseadapted to -engage said flange to prevent downward movement of vsaid bell when said bell has been raised a predetermined distance, and said dogs beingadapted to automatical- ;l y release said bell when said bell is raised beyond. a predetermined ,poi'nt.

The combination-avitha Vertically movable basket. bell of a centrifugal drier- "hav- 111g an outwardly flaringfiange at its upper s end, of a pluralityoi locking' dogs,pivotally -mounted at spaced intelwalssadjaeent said bell: and extending into the path of travel of said flange, springs tensioned-against said dogs to normally forceisaid dogs downwardly, jaws on said dog's adapted "toenga'ge around said flange when said bell is raised a predetermined distance, the closed end of said jaw "portion being a greater distance away :trom the pivotal center of said dogs than the outer edge of said flange, whereby a slight downwardimovement of said bell engage =-around-said flange whens-said bell is *raiseda ;predetermineddist a'rlce, the closed end of said j aw portion being a; greaterdis- 'tance away from the pivotal' eenter of said dogs than :the outer edge of saidflange,

whejreby a slight downward inovemen-t :of'

saidbell will wedge said flangeagainstthe bottom elosedend ofsaid jawsmnd prevent the return-of said bell to closed position;

--said dogs being adapted to automatically ngage from said flange whenid b lj i raised beyond predetermined point.

In testimony whereofI have hereunto set my hand. 

